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Date: Fri, 15 Nov 2019 11:24:16 +0800 From: Gao Xiang <gaoxiang25@...wei.com> To: "Theodore Y. Ts'o" <tytso@....edu> CC: Chao Yu <yuchao0@...wei.com>, Andreas Dilger <adilger.kernel@...ger.ca>, <linux-ext4@...r.kernel.org>, <linux-kernel@...r.kernel.org>, Ritesh Harjani <riteshh@...ux.ibm.com> Subject: Re: [PATCH v2] ext4: bio_alloc with __GFP_DIRECT_RECLAIM never fails Hi Ted, On Thu, Nov 14, 2019 at 10:19:53PM -0500, Theodore Y. Ts'o wrote: > On Thu, Oct 31, 2019 at 05:29:58PM +0800, Chao Yu wrote: > > On 2019/10/31 17:23, Gao Xiang wrote: > > > Similar to [1] [2], bio_alloc with __GFP_DIRECT_RECLAIM flags > > > guarantees bio allocation under some given restrictions, as > > > stated in block/bio.c and fs/direct-io.c So here it's ok to > > > not check for NULL value from bio_alloc(). > > > > > > [1] https://lore.kernel.org/r/20191030035518.65477-1-gaoxiang25@huawei.com > > > [2] https://lore.kernel.org/r/20190830162812.GA10694@infradead.org > > > Cc: Theodore Ts'o <tytso@....edu> > > > Cc: Andreas Dilger <adilger.kernel@...ger.ca> > > > Cc: Ritesh Harjani <riteshh@...ux.ibm.com> > > > Cc: Chao Yu <yuchao0@...wei.com> > > > Signed-off-by: Gao Xiang <gaoxiang25@...wei.com> > > > > Reviewed-by: Chao Yu <yuchao0@...wei.com> > > Thanks, applied. > > - Ted Thanks for considering this. Have a nice day. Thanks, Gao Xiang
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